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Session Report

Summary:
Test run at: 2022-06-30 18:37:57 GMT
Client Prefix (v4): 128.205.206.x/24
Client AS (v4): 3685 (BUFFALO-ASN)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (128.205.206.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
128.205.206.x/24/313685yes
128.205.206.x/24/303685yes
128.205.206.x/24/293685yes
128.205.206.x/24/283685yes
128.205.206.x/24/273685yes
128.205.206.x/24/263685yes
128.205.206.x/24/253685yes
128.205.206.x/24/243685yes
128.205.207.x/24/233685no
128.205.204.x/24/223685no
128.205.202.x/24/213685no
128.205.198.x/24/203685no
128.205.222.x/24/193685no
128.205.238.x/24/183685no
128.205.142.x/24/173685no
128.205.78.x/24/163685no
128.204.206.x/24/1562370no
128.207.206.x/24/14UNROUTEDno
128.201.206.x/24/13266648no
128.197.206.x/24/12111no
128.221.206.x/24/11UNROUTEDno
128.237.206.x/24/109no
128.141.206.x/24/9513no
128.77.206.x/24/83292no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
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